<template>
    <div class="detail_nav">
      <nav-bar>
        <div slot="left" class="back" @click="back">
          <img src="~assets/img/common/back.svg" alt="">
        </div>
        <div slot="center" class="title" content="div-center">
          <div v-for="(item, index) in titles" class="title-item" :class="{active:index == currentIndex}" @click="titleClick(index)">{{item}}</div>
        </div>
      </nav-bar>
    </div>
</template>

<script>
  import NavBar from "components/common/navbar/NavBar";
  export default {
    name: "DetailNavBar",
    components: {
      NavBar
    },
    data() {
      return {
        titles: ['商品', '参数', '评论', '推荐'],
        currentIndex: 0
      }
    },
    methods: {
      titleClick(index) {
        this.currentIndex = index
      },
      back() {
        this.$router.go(-1)
      }
    }
  }
</script>

<style scoped>
  .title{
    display: flex;
  }
  .title-item{
    flex: 1;
  }
  .active {
    color: var(--color-high-text);
  }
  .back img{
    margin-top: 10px;
    margin-left: 20px;
  }
  .detail_nav{
    position: relative;
    z-index: 99;
    background-color: #fff;
  }
</style>
